CN218094597U - Valve rod sealing structure - Google Patents
Valve rod sealing structure Download PDFInfo
- Publication number
- CN218094597U CN218094597U CN202222763840.6U CN202222763840U CN218094597U CN 218094597 U CN218094597 U CN 218094597U CN 202222763840 U CN202222763840 U CN 202222763840U CN 218094597 U CN218094597 U CN 218094597U
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- Prior art keywords
- valve
- cover
- valve rod
- rod
- locking
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Abstract
The utility model relates to a valve rod sealing structure, which comprises a valve body, a valve core, a valve rod, a valve cover, a limit latch hook and a lock cover, wherein a through flow passage is arranged in the lower part of the valve body; the periphery of the upper part of the valve cover is provided with external threads, the upper end of the valve cover is engaged and installed with a locking cover, the locking cover is used for limiting and fixing a limiting locking hook, and the locking cover is assembled to prevent the valve rod from being separated from the valve cover. This structure sets up spacing hasp in radial one side of valve rod upper end when guaranteeing valve rod leakproofness, and the reinforcing is spacing to the holding power of valve rod, and simultaneously, this structure has increased physics spacingly, can prevent the valve rod departure when the dismouting, promotes the security.
Description
Technical Field
The utility model belongs to the valve field, especially, valve rod seal structure.
Background
The valve is extensive be applied to among numerous fields such as oil, petrochemical industry oil transportation, gas transmission pipeline and production, life, the regulation and control performance of case formula choke valve is good, but the valve rod receives medium one-way ejection pressure for a long time, thereby it influences the valve rod leakproofness to require higher to the leakproofness of valve rod, thereby especially discovery valve rod position deformation after the live time is longer influences the life of valve.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art's weak point, provide a valve rod seal structure that design science, simple structure, be convenient for operation, reliability are high.
The utility model provides a its technical problem take following technical scheme to realize:
a valve rod sealing structure is characterized in that: the valve comprises a valve body, a valve core, a valve rod, a valve cover, a limiting latch hook and a lock cover, wherein a through flow channel is formed in the lower part of the valve body, the valve rod which is vertically arranged is installed in the middle of the valve body, the valve core is coaxially and fixedly installed at the lower end of the valve rod, the valve cover is installed at the upper end of the valve body in a sealing mode, a through hole in the vertical direction is formed in the middle of the valve cover, the valve rod coaxially penetrates out of the valve cover upwards through the through hole, an annular limiting groove is formed in the upper part of the valve rod in the valve cover, the limiting latch hook is embedded in one radial side of the upper part of the valve cover, and the end part of the latch hook is embedded into the annular limiting groove in the upper part of the valve rod; the periphery of the upper part of the valve cover is provided with external threads, the upper end of the valve cover is meshed with and provided with a locking cover, the locking cover is used for limiting and fixing a limiting locking hook, and the locking cover is assembled to prevent the valve rod from being separated from the valve cover.
And two sealing rings which are arranged at intervals up and down are arranged in the through hole at the lower part of the valve cover.
And the upper end of the valve rod is fixedly provided with a sleeve, the upper end of the sleeve is connected with a hand wheel through a flat key, the lower part of the sleeve is coaxially arranged in the valve cover, and a bearing is arranged between the sleeve and the valve cover.
The utility model discloses an advantage is with positive effect:
this structure sets up spacing hasp in radial one side of valve rod upper end when guaranteeing valve rod leakproofness, and the reinforcing is spacing to the holding power of valve rod, and simultaneously, this structure has increased physics spacingly, can prevent the valve rod departure when the dismouting, promotes the security.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
fig. 2 is a partially enlarged view of a portion a in fig. 1.
Detailed Description
The present invention will be described in further detail with reference to the following embodiments, which are illustrative, not restrictive, and the scope of the invention should not be limited thereto.
A valve rod sealing structure comprises a valve body 8, a valve core 9, a valve rod 1, a valve cover 6, a limiting latch hook 5 and a latch cover 4, wherein a through flow channel is formed in the lower part of the valve body, the valve rod 1 which is vertically arranged is installed in the middle of the valve body, the valve core 9 is fixedly installed at the lower end of the valve rod coaxially, and the valve rod can drive the valve core to move up and down so as to open or block the flow channel;
the upper end of the valve body is hermetically provided with a valve cover 6, the middle part of the valve cover is provided with a through hole in the vertical direction, the through hole is used for the valve rod to penetrate out, and the through hole at the lower part of the valve cover is internally provided with two sealing rings 7 which are spaced up and down and are in sealing contact with the valve rod.
An annular limiting groove is formed in the upper portion of the valve rod inside the valve cover, a limiting latch hook 5 is embedded in one radial side of the upper portion of the valve cover, the end portion of the latch hook is embedded into the annular limiting groove in the upper portion of the valve rod, and the vertical position of the valve rod is further limited;
the periphery of the upper part of the valve cover is provided with external threads, the upper end of the valve cover is meshed with and provided with a locking cover 4, the locking cover is used for limiting and fixing a limiting locking hook, and the locking cover is assembled to prevent the valve rod from being separated from the valve cover.
The upper end of the valve rod is fixedly provided with a sleeve 2, the upper end of the sleeve is connected with a hand wheel through a flat key, the lower part of the sleeve is coaxially arranged in the valve cover, and a bearing is arranged between the sleeve and the valve cover to ensure that the valve rod can coaxially and flexibly rotate.
Although the embodiments of the present invention and the accompanying drawings are disclosed for illustrative purposes, those skilled in the art will appreciate that: various substitutions, changes and modifications are possible without departing from the spirit and scope of the present invention and the appended claims, and therefore, the scope of the present invention is not limited to the disclosure of the embodiments and the accompanying drawings.
Claims (3)
1. A valve rod sealing structure is characterized in that: the valve comprises a valve body, a valve core, a valve rod, a valve cover, a limiting latch hook and a latch cover, wherein a through flow channel is formed in the lower part of the valve body, the valve rod which is vertically arranged is installed in the middle of the valve body, the valve core is coaxially and fixedly installed at the lower end of the valve rod, the valve cover is installed at the upper end of the valve body in a sealing manner, a through hole in the vertical direction is formed in the middle of the valve cover, the valve rod coaxially penetrates out of the valve cover from the through hole, an annular limiting groove is formed in the upper part of the valve rod in the valve cover, the limiting latch hook is embedded in one radial side of the upper part of the valve cover, and the end part of the latch hook is embedded in the annular limiting groove in the upper part of the valve rod; the periphery of the upper part of the valve cover is provided with external threads, the upper end of the valve cover is meshed with and provided with a locking cover, the locking cover is used for limiting and fixing a limiting locking hook, and the locking cover is assembled to prevent the valve rod from being separated from the valve cover.
2. The valve stem seal structure of claim 1, wherein: two sealing rings are arranged in the through hole at the lower part of the valve cover at intervals up and down.
3. The valve stem sealing structure according to claim 1, wherein: the upper end of the valve rod is fixedly provided with a sleeve, the upper end of the sleeve is connected with a hand wheel through a flat key, the lower part of the sleeve is coaxially arranged in the valve cover, and a bearing is arranged between the sleeve and the valve cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222763840.6U CN218094597U (en) | 2022-10-20 | 2022-10-20 | Valve rod sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222763840.6U CN218094597U (en) | 2022-10-20 | 2022-10-20 | Valve rod sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218094597U true CN218094597U (en) | 2022-12-20 |
Family
ID=84457275
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222763840.6U Active CN218094597U (en) | 2022-10-20 | 2022-10-20 | Valve rod sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218094597U (en) |
-
2022
- 2022-10-20 CN CN202222763840.6U patent/CN218094597U/en active Active
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